In a right-angled triangle ABC (more than C = 90 degrees), the hypotenuse AB = 20, cos A = 0.6. Find the AC leg.

The leg of a right-angled triangle is the ratio of the leg adjacent to the corner to the hypotenuse of a right-angled triangle.

CosBAC = AC / AB.

AC = AB * CosBAC = 20 * 0.6 = 12 cm.

Answer: The length of the AC leg is 12 cm.

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